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3 years ago

Simplify the expression. 2(x−2)+5x

Mathematics

2 answers:

LenaWriter [7]3 years ago

6 0

Question: 2x - 4 + 5x
Simplified: 7x - 4

Ber [7]3 years ago

5 0

2(x-2)+5 2x-4+5x 2x+5x=7x 7x-4 7x/7 -4/7 x=-0.571428571

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Which is the slope of the line y = -3x + 2? A. -3 B. -2 C. 2 D. 3

alexandr1967 [171]

The answer is A -3.

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3 years ago

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- 3(1 – n) =-6 - 6n Step by step please if possible

harkovskaia [24]

-3 + 3n = -6 - 6n. Expand the brackets
3n + 6n = -6 + 3. Collect like terms
9n = -3
n = -3/9 = -1/3

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3 years ago

Answer the following: a) 3x 8 + 2 x 5 = b) 3* (8 + 2)* 5 =

vlada-n [284]

Answer:

a . 34

b. 150

Step-by-step explanation:

in the second case firstly add the number in bracket and multiply both the number given

in 1st case first multiply

then add both the product

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3 years ago

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Point A is located at (-2, 2), and point M is located at (1,0). If point M is the midpoint of AB, find the location of point B.

bezimeni [28]

Answer:

B. $B = (4,-2)$

Step-by-step explanation:

GIven that $A = (-2, 2)$ and $M = (1, 0)$ , and that point M is the midpoint of AB, the midpoint can be determined as a vectorial sum of A and B. That is:

$M = \frac{1}{2}\cdot A + \frac{1}{2}\cdot B$

The location of B is now determined after algebraic handling:

$\frac{1}{2}\cdot B = M - \frac{1}{2}\cdot A$

$B = 2\cdot M -A$

Then:

$B = 2\cdot (1,0)-(-2,2)$

$B = (2\cdot 1, 2\cdot 0)-(-2,2)$

$B = (2,0) -(-2,2)$

$B = (4,-2)$

Which corresponds to option B.

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3 years ago

Show how to multiply 6 x 298 using friendly numbers and then use properties and mental math.

Black_prince [1.1K]

For this case we have the following multiplication:

$6 * 298$

We can rewrite this operation to facilitate the calculation.

We have then:

$6 * 298 = 6 * (200 + 90 + 8)$

From here, we apply the distributive property.

We have then:

$6 * 200 + 6 * 90 + 6 * 8$

Rewriting we have:

$1200 + 540 + 48$

Finally adding all the numbers we have:

$1200 + 540 + 48 = 1788$

Answer:

The value of 6 * 298 is 1788 and the calculations can be provided as follows:

$6 * 298 = 6 * (200 + 90 + 8)$

7 0

3 years ago

Read 2 more answers